中国煤炭地质
中國煤炭地質
중국매탄지질
COAL GEOLOGY OF CHINA
2014年
3期
39-42,45
,共5页
平推式滑坡%降雨%形成机理%稳定性评价%治理措施
平推式滑坡%降雨%形成機理%穩定性評價%治理措施
평추식활파%강우%형성궤리%은정성평개%치리조시
translational landslide%rainfall%formation mechanism%stability assessment%governance measures
平推式岩质滑坡作为一类容易被人们忽视的典型滑坡,有其特殊的成因与变形破坏特征。以广元市剑阁县坟林岩滑坡为背景,研究了缓倾岩质滑坡的特征、成因模式和变形破坏特征。归纳总结出降雨是降低滑坡体稳定性的主要因素,并对滑坡体进行了不同工况下的稳定性评价。分析认为,此类滑坡产生变形的主要因素是后缘裂隙水位抬升,裂隙水压力增加,同时裂隙水渗透在滑面上形成扬压力,滑面抗剪强度降低,最终导致滑坡整体失稳。在此基础上对不同整治措施的技术可行性及经济指标进行比较分析,提出了以排水为主,支挡为辅的治理措施。在滑坡后缘设置截、排水沟,前缘设置抗滑键进行支挡。工程实施两年来未发现任何变形,达到了治理的目的,经济效益明显。
平推式巖質滑坡作為一類容易被人們忽視的典型滑坡,有其特殊的成因與變形破壞特徵。以廣元市劍閣縣墳林巖滑坡為揹景,研究瞭緩傾巖質滑坡的特徵、成因模式和變形破壞特徵。歸納總結齣降雨是降低滑坡體穩定性的主要因素,併對滑坡體進行瞭不同工況下的穩定性評價。分析認為,此類滑坡產生變形的主要因素是後緣裂隙水位抬升,裂隙水壓力增加,同時裂隙水滲透在滑麵上形成颺壓力,滑麵抗剪彊度降低,最終導緻滑坡整體失穩。在此基礎上對不同整治措施的技術可行性及經濟指標進行比較分析,提齣瞭以排水為主,支擋為輔的治理措施。在滑坡後緣設置截、排水溝,前緣設置抗滑鍵進行支擋。工程實施兩年來未髮現任何變形,達到瞭治理的目的,經濟效益明顯。
평추식암질활파작위일류용역피인문홀시적전형활파,유기특수적성인여변형파배특정。이엄원시검각현분림암활파위배경,연구료완경암질활파적특정、성인모식화변형파배특정。귀납총결출강우시강저활파체은정성적주요인소,병대활파체진행료불동공황하적은정성평개。분석인위,차류활파산생변형적주요인소시후연렬극수위태승,렬극수압력증가,동시렬극수삼투재활면상형성양압력,활면항전강도강저,최종도치활파정체실은。재차기출상대불동정치조시적기술가행성급경제지표진행비교분석,제출료이배수위주,지당위보적치리조시。재활파후연설치절、배수구,전연설치항활건진행지당。공정실시량년래미발현임하변형,체도료치리적목적,경제효익명현。
The translational lithoid landslide as a kind of typical landslide is easy to be ignored by people;it has special cause of forma-tion and deformation characteristics. Taking the Fenlinyan landslide in Jiange County, Guangyuan City as an example, studied gently dipping lithoid landslide characteristics, genetic mode and deformation characteristics. Summed up the rainfall is main factor to reduce landslide stability, and carried out stability assessment of landslide mass under different operating modes. The analysis considered that main deforming factors of this kind landslide have trailing edge fissure water level upraising, pressure increased, simultaneously, the penetration of fissure water formed uplifting pressure on sliding face and reduced shear strength, finally caused landslide entire slope failure. On this basis carried out comparative analysis on technical feasibility and economic indicators of different governance mea-sures, put forward mainly drainage, assisted with retaining governance measures. On trailing edge has set intercepting and draining ditches, while on front edge set anti-slide ties to retain. After two years of project implementation, no any deformation happened, thus archived the objective of governance, and obvious economic benefits as well.